To have a view of all project resources and of their use in each build configuration, right-click the project in the Project Explorer and click Build Configurations Explorer on the context menu.
The Build configurations dialog box shows the data arranged in a pivot table. The tree of project folders and files is displayed in the left column of the table. The project's build configurations are represented by the columns located to the right from the tree.
If a particular folder or a file is included in a build configuration, the table shows the
sign at the intersection of
the respective column and the raw. An excluded resource is marked with the 
sign.
You can modify the availability of the project resources in the Build configurations dialog box. To change the status of a certain resource to the opposite one, click the icon at the intersection of the respective column and the raw.